Feature Extraction Method of Transmission Signal in Electronic Communication Network Based on Symmetric Algorithm

Because the existing methods extract the signal characteristics of electronic communication networks, there is a problem of poor extraction. In this paper, a feature extraction method based on symmetric algorithm for transmission signals in electronic communication networks is proposed. The transmission signal in the time domain is decomposed by three-layer wavelet packet decomposition through threshold denoising and data dimension reduction. The adaptive floating threshold is used as a threshold to quantify the wavelet coefficients of the signal, which can effectively remove noise while retaining valuable transmission signal. Secondly, the feature extraction algorithm based on symmetric Holder coefficient is used to transform the transmitted signal from time domain to frequency domain, identify the signal sequence, and classify the signal sequence using neural network classifier. The simulation results show that the proposed method can extract the transmission signal of electronic communication network with the highest accuracy of 98.21%. This method can extract the amplitude and frequency characteristics of the transmission signal accurately under strong vibration environment. It is an efficient method for feature extraction of transmission signal.

Mitigating Impacts of Natural Hazards on Fishery Ecosystems

<em>Abstract</em>.—The Extension Disaster Education Network (EDEN) is a collaboration of Land Grant and Sea Grant institutions to share educational resources and expertise to reduce the impact of natural and man-made disasters. EDEN has an electronic communication network and Web site that make information, educational materials, and online courses available to extension agents, faculty, and collaborators to use when working with constituents. EDEN also supports training opportunities and workshops to enhance the capacity of faculty to provide programs on mitigation, preparation, response, and recovery of natural and man-made disasters. EDEN contributed to the recovery efforts following hurricanes Katrina and Rita through educational materials and programs that were relevant to the coastal communities and businesses impacted. EDEN has the capacity to expand its educational impact through the partnership with Sea Grant to more effectively address needs of coastal communities, businesses, and resource managers.

Mitigating Impacts of Natural Hazards on Fishery Ecosystems

<em>Abstract</em>.—The Extension Disaster Education Network (EDEN) is a collaboration of Land Grant and Sea Grant institutions to share educational resources and expertise to reduce the impact of natural and man-made disasters. EDEN has an electronic communication network and Web site that make information, educational materials, and online courses available to extension agents, faculty, and collaborators to use when working with constituents. EDEN also supports training opportunities and workshops to enhance the capacity of faculty to provide programs on mitigation, preparation, response, and recovery of natural and man-made disasters. EDEN contributed to the recovery efforts following hurricanes Katrina and Rita through educational materials and programs that were relevant to the coastal communities and businesses impacted. EDEN has the capacity to expand its educational impact through the partnership with Sea Grant to more effectively address needs of coastal communities, businesses, and resource managers.